Band-clamp.



J. G. ELKIN.

BAND CLAMP.

APPLICATION FILED NOV. 1. 1914.

vPatented Mar. 13, 1917. I

WITNESSE S N A TTOR/VEYS UNITED S'LKTES PAEN OFFICE.

JACOB e. ELKIN, or New YORK, N. Y.

BAND-CLAMP.

To all whom it may concern:

Be it known that I, JAooB G. ELKTN, a citizen of the United States, anda resident of the city of New York, borough of Manhattan, in the countyand State of New York, have invented a new and Improved Band-Clamp, ofwhich the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved band clampmore especially designed for use on hose, pipe coverings and likearticles and arranged to permit of conveniently placing the clamp inposition on the article and drawing the band tight around the articlewithout danger of the band becoming accidentally loosened or detachedafter it isonce applied.

In order to accomplish the desired result, use is made of a bandprovided at oneend with an outwardly extending abutment and having itsother end threaded, and a nut screwing on the said threaded end andresting against the said abutment.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a cross section of the band clamp as applied;

Fig. 2 is a side elevation of the same;

Fig. 3 is a plan view of the threaded end of the band;

Fig. at is a perspective view of the washer for the nut screwing on thethreaded end of the band;

Fig. 5 is a sectional plan view of a modified form of the abutment onthe band, the section being on the line 5-5 of Fig. 6;

Fig. 6 is a perspective view of the same; and

Fig. 7 is a side elevation of another. modifled form of the same.

The band A of the hose clamp has one end A reduced in width and its sideedges pro-- vided with screw threads A on which screws a nut B having awasher G seated on the front Specification of Letters Patent.

' Patented Mar. 13, 1917.

Application filed November 7, 1914. Serial No. 870,836.

The front edges D of the abutment flanges D are-preferably inclinedupwardly and forwardly so that the washer O is normally as low down onthe abutment flanges as possible so that the bottom face of thenut .13contacts with the outer face of the band upward movement of the washer,however,

being limited by stops D formed integrally on the upper ends of theabutment flanges .D. By the arrangement described the user can tightenthe band A whenever it is desired to do so by turning the-nut Bcorrespondingly, it being understood that in turning the nut'theright-hand bottom corner of the nut engages the face of the band and thebottom of the nut gradually moves out of contact with the face of theband A, and in doing so the nut and the washer O rise to allow furtherturning of the nut until the desired tightness of the band A is reached.The nut is usually turned until one of its sides is lowermost and incontact with the outer face of the band A to hold the nutagainstaccidental turning, as previously explained. It 'is understoodthat after the nut has been screwed .up the desired distance with oneface lowermost then the nut and washer move downward owing to theinclined faces of the abutment flanges until the bottom face of the nutis in contact with the outer face of the band A.

In order to hold the washer C from displacement in a lateral direction,the sides of the washer are preferably provided with rearwardlyextending guiding flanges C fittingonthe outer facesof the abutmentflanges D. The washer C is preferably provided with a conical centerportion C fitting into a countersink at the rear face of the nut B sothat the nut is at all times held in a central position relativeto thewasher C, it being understood that the said central portion 0 isprovided With a slot C? for the passage of the reduced end A of the bandA. By the arrangement described the nut, washer and the end A of theband readily move in unison up and down by turning the nut B aspreviously mentioned. It will also be noticed that by the constructionshown and described the end A of the band is as low down as possible andoverlies the other end of the band, the terminal of the said other endbeing adistance beyond the abutment flanges D so as to completelyencircle the hose, pipe covering or other article on which the clamp isused.

In practice, I prefer to strike up the abutment flanges D from thematerial of which the band A is made, but for very wide bands theabutment flanges are preferably made separate from the band A andattached thereto, as indicated in Figs. 5 and 6. In this case the band Ais provided with a struck-up and somewhat narrowed portion A to providea seat for the bottom I) of the abutment flanges D provided withapertures D near the bottom for the reception of lugs 91* extending fromthe sides of the struck-up portion A By the arrangement described, theabutment flanges are securely fastened to the band A and the latter issmooth on the under side so as to properly fit the article on which theclamp is used. Otherwise the abutment flanges D are the same as abovedescribed in reference to Figs. 1 and 2.

In the modified form shown in Fig. 7, the abutment flangesl) are on ashort band A hooked in front of the flanges D onto a hook A of the mainor encircling band A provided at its reduced threaded end A with awasher C and a nut 13 engaging the abutment flanges as ab ve described.

It is understood that in placing the band clamp in position on the hoseor other article the band A is opened up (see dotted lines in Fig. l) toallow of placing the band sidewise on the hose, after which the end A isbent down between the flanges D and with the washer engaging the frontfaces of the abutment flanges D. The nut B is then screwed on thethreaded terminal to draw the band tight around the hose, as previouslyexplained.

It will also be noticed that the guide flanges C of the washer C preventthe abutment flanges D from spreading when the nut is tightly screwedup.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent:

1. A band clamp, comprising a band threaded at one end, an abutment onthe other end of the said band and having spaced abutment flangesbetween which passes the said threaded end,-the upper ends of the saidflanges having stops, a nut screwing on. the said threaded end, and awasher interposed between the said nut and the said flanges, the washerbeing slidable up and down on the said flanges and its upward movementbeing limited by the said stops, the said washer having a conical centerportion and the said nut being countersunk to receive the said conicalcenter portion.

2. A band clamp, comprising a band threaded at one end, an abutment onthe other end of the said band and having spaced abutment flangesbetween which passes the said threaded end, the front edges of the saidflanges being inclined upwardly and forwardly, and the upper ends of thesaid flanges having stops, a nut screwingon the said threaded end of theband, and a washer interposed between the said nut and the beveled edgesof the flanges, the washer being slidable up and down on the said frontedges and the upward movement of the washer being limited by the saidstops.

3. A band clamp, comprising a band having one end reduced in width andthreaded, abutment flanges extending outwardly from the other end of thesaid band and between which passes the said threaded end of the band,the flanges being inclined upwardly and forwardly and provided withstops at their ends, a nut screwing on the said threaded end, and awasher interposed between the abutment flanges and the nut and providedat the sides with guiding flanges engaging the said abutment flanges.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JACOB G. ELKIN.

W itnesses THno. G. Hos'rnn, PHILIP D. RoLLHAUs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

